In July, a hot day is likely to cause leaf burn or desiccation, stressing the transplants. Protect the plants from sun while dividing and transplanting. In spring, divide hostas just as they start coming up, before the leaves have unfurled. In fall, wait until cool, moist weather arrives. When to Transplant Hostas It's also easier to see the new shoots, without risk of leaf damage. If you have a choice in deciding when to transplant hostas, don't do it in high summer when the ground is hard and the air is dry. Dividing Hostas To divide hostas, use a sharp-edged shovel to dig up the entire clump of the mature plant from the ground. Use a sharp knife to cut the roots of the plant into sections. Wash the soil from the roots before re-planting. Splitting hostas is best done in spring or early fall. Ideally, plan on dividing hostas before spring or fall rains arrive. Hostas suffer most when they lose roots, so dig as much of the rootball as possible. If you just need a few divisions, dig small clumps that have formed beside the larger parent clump. Hosta out of the ground. They can survive for weeks out of the ground as long as you keep them moist and shaded. Divide the roots before you plant them, and you'll get more, bigger, and more vigorous plants in the spring.
To thin a hosta plant, divide the clump into separate sections, each of which can be replanted to start a new plant. Though you can divide a hosta any time the ground is workable, it's best to do it in the spring just as the leaves emerge from the ground, or in the fall about six weeks before the first expected frost.
Hostas (Hosta spp. ) are herbaceous perennials that grow in mounded clumps of showy leaves. They sprout from rhizomes, or underground stems, that spread and enlarge the clump until it can be divided into smaller plants.
Petiole rot may result in wilted hostas. This disease, caused by the fungal pathogen Sclerotium rolfsii, may result in a rapid plant death. Most prevalent after rains and warm weather, petiole rot causes yellowing of the plant's outer leaves as well as wilt. Remove and destroy infected plants.
Hostas are not deep rooting -- their roots are more likely to spread horizontally, which makes the width of the planting hole slightly more important than the depth. A planting hole that's 12 to 16 inches deep is sufficient. Make the width of the planting hole at least one-and-a-half times the size of the mature clump.
Hostas are divided by splitting the crown to leave one or more eyes in each piece. Eye A growing shoot from the crown, supporting 1 (rare) to perhaps 12 leaves. The new eyes are evident as conical projections from the crown in early spring.
When to cut back perennials Selective cutting back in autumn can retain the dried, bleached flowerheads of plants, while removing material showing signs of decay or fungal growth. Examples include: such as Eryngium (sea holly), Phormium (New Zealand flax) and the foliage and flowers of ornamental grasses.
Step 1: Prep for Success. Stick mainly to fall and spring for transplanting. Step 2: Prepare the Plant's New Home First. Digging a Hole. Step 3: Soak the Soil. If the soil is very dry, water the plant first before digging it up. Step 4: Dig It Up. Step 5: Place in Hole and Add Organic Mulch. Step 6: Water Slowly and Deeply.
Coffee grounds can be used to mulch plants that slugs love to feast on, such as hostas, ligularias and lilies. Try them for daffodils and other spring bulbs as well. You also can rid areas of slugs and snails by mixing up some instant coffee and making it two to three times stronger than you ordinarily would.
The ideal times are in spring or early autumn. In most regions, if you can time it right, plant to transplant hostas before seasonal rains arrive. Early fall is probably the absolute best time to tackle transplanting hostas, because soil is still warm from long summer days, which means hosta roots will grow quickly.
Hostas are divided into fast growing, moderate, and slow-growing groups. The slow-growing varieties take up to eight years to mature and tend to be larger overall, while the fast-growing varieties take two to three years to mature and tend to be smaller.
Cut back hostas in fall or winter, or in early spring before new shoots develop. Use a pair of shears to cut through the foliage at the soil line. Hostas go dormant om winter and grow new foliage in spring. If slugs are a problem in your garden, cut the foliage back in fall.
The best time of year to divide hostas is late summer (August or early September). But don't worry if you forget—you can divide hostas any time from spring to fall. You'll have about a four-week window to divide your hostas.
Method 2 Transplant Phlox Keep the new plant divisions cool and moist. Select sunny, dry, well ventilated locations in which to transplant the phlox divisions. Till the soil to a depth of at least 12 inches (30 cm). Dig a hole large enough to accommodate the root base of the plant. Put the roots into the hole.